from typing import List, Union
import string
import random

class Str:
    @staticmethod
    def isBlank(*args: List[str]):
        for item in args:
            if item == '' or item == None:
                return True
        return False
    
    @staticmethod
    def generateRandomString(len: int):
        characters = string.ascii_lowercase + string.digits
        random_string = ''.join(random.choice(characters) for _ in range(len))
        return random_string
